Not the amps, but the processors. It’s been a very long time, but after my Theta Casanova the Onkyo and Emotiva were not even close to natural sounding. Really thin, AM radio kind of digital presentation.
I ended up with Oppo and then Anthem for a variety of reasons.
I will say that if it still sounds the same it is super easy to tell the difference. I mean, you don’t have to listen to me, listen for yourself.
If you are buying used, 100% stick with Anthem. If you are buying new, I would still recommend the Anthem but I probably don't have a very good idea of what the Emotivas sound like anymore.